苏门答腊拟油鲶，一种来自印度尼西亚东加里曼丹的新鲶鱼（硬骨鱼纲：鲶形目）。
Silurichthys exortivus, a new catfish (Teleostei: Siluridae) from eastern Borneo, Indonesia.
机构信息
c/o Lee Kong Chian Natural History Museum, 2 Conservatory Drive, Singapore 117377..
c/o Lee Kong Chian Natural History Museum, 2 Conservatory Drive, Singapore 117377. Rue des Rauraques 6, 2800 Delmont, Switzerland..
出版信息
Zootaxa. 2022 May 17;5138(2):185-190. doi: 10.11646/zootaxa.5138.2.6.
Silurichthys exortivus, a new species of silurid catfish, is described from the Mahakam River drainage in eastern Borneo. The new species can be distinguished from congeners in lacking a dorsal fin, having 4 (vs. 67) principal rays on the upper caudal-fin lobe and a combination of: body depth at anus 14.0% SL, caudal peduncle depth 5.1% SL, pelvic fins absent, 54 anal-fin rays, caudal fin with asymmetrical lobes (upper lobe 1.1 times longer than lower), 48 vertebrae, 1 gill raker on the first branchial arch, and a mottled brown body. Based on the reduced number of principal caudal-fin rays, S. exortivus, S. ligneolus and S. sanguineus are hypothesized to form an exclusively Bornean clade.
苏门答腊铲颌鱼，一种新的铲颌鲶鱼，来自婆罗洲东部的马哈坎河流域。新种与同属物种的区别在于没有背鳍，上尾鳍叶有 4 根（而不是 67 根）主鳍条，并且具有以下特征的组合：肛门前体高 14.0%，尾柄深 5.1%，无臀鳍，臀鳍鳍条 54 根，尾鳍不对称（上叶比下叶长 1.1 倍），有 48 个脊椎骨，第一鳃弓上有 1 个鳃耙，身体呈斑驳的棕色。根据减少的主尾鳍鳍条数，苏门答腊铲颌鱼、线纹铲颌鱼和血鳍铲颌鱼被假设形成一个仅存在于婆罗洲的分支。
Zotero 插件